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Rudbeckia fulgida spreads by both stoloniferous stems and seed. The seeds are produced in fruits called cypselae, which are 2.2 to 4 millimetres (0.09 to 0.16 in) long and have short coroniform pappi 0.2 millimetres (0.008 in) long.
Rudbeckia (/ r ʌ d ˈ b ɛ k i ə /) [4] is a plant genus in the Asteraceae or composite family. [ 5 ] [ 6 ] Rudbeckia flowers feature a prominent, raised central disc in black, brown shades of green, and in-between tones, giving rise to their familiar common names of coneflowers and black-eyed-susans .
Previously R. auriculata has been treated as a variety of R. fulgida Aiton.However, in 1957 it was noted that it varied considerably from R. fulgida var. fulgida, such that treating it as a variety would conflict with species concepts within Rudbeckia, [4] consequently in 1975 'R. fulgida var. auriculata' gained species status becoming R. auriculata.
In cultivation the plant was able to parasitize Helianthus occidentalis (western sunflower) and Rudbeckia fulgida (showy black-eyed Susan) and it was observed to connect to a grass, possibly Poa compressa (Kentucky bluegrass), in the field. [2]
Rudbeckia fulgida, with yellow or orange flowers Index of plants with the same common name This page is an index of articles on plant species (or higher taxonomic groups) with the same common name ( vernacular name).
Brown daisy – Rudbeckia hirta; Common daisy, daisy – Bellis perennis; Gloriosa daisy – Rudbeckia hirta; Poorland daisy – Rudbeckia hirta; Yellow daisy – Rudbeckia hirta; Yellow ox-eye daisy – Rudbeckia hirta; Dandelion - Taraxacum; Deadnettle – Lamium spp. Henbit deadnettle – Lamium amplexicaule; Red deadnettle – Lamium purpureum